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Installation Instruction
Changing parameters and performance of systems
Several parameters for each system can be changed during and after the installation. For a complete
understanding of how these parameters affect the performance of the roof and ground system, please
refer to Appendix B: "How it works".
Only change the GX-850M ver. IV parameters if you are aware of the effects of your ac-
tions.
Reference: Appendix A: Installer menu
Roof system
Melting temperature
Changing the melting temperature will affect when the system is activated in case of moisture and low
temperatures.
The factory setting is 35 °F (1.5 °C).
This means that the heating system will be activated if the temperature falls below 29 °F (1.5 °C) and
moisture is detected.
Moisture level
The "moisture level" decides when the system detects moisture.
The factory setting is 50 (on a scale from 5 to 95).
The lower the setting, the more sensitive the system is to moisture.
Post-heat
Once the sensor has detected that the roof/gutter is dry and free of ice and snow the system will keep
heating for another hour (default). If you wish to increase/decrease this time see capital A: Installer menu.
The factory setting is 1 hour (on a scale from 0 to 9 hours).
Priority
When using the GX-850M ver. IV as a dual or combi system, it is possible to prioritize the systems.
When the priority of 2 systems is equal, both systems can heat at the same time. If the priority of the 2
systems differs, and both systems want to heat, only the system with the highest priority is allowed to
heat.
The factory setting is 1 (highest priority) for all systems.
Clogged drain
It is possible to enable and disable the "Clogged drain warning".
The factory setting is "Warning On".
System and sensor name
It is possible to change the names of the system and connected sensors (see capital A: Installer menu).
8 | © Danfoss | 2018.10
GX-850M ver. IV
VUAPA422
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